👉 Semispontaneity is a concept in chemistry that describes the tendency of a substance to emit a blue light when it is heated. This phenomenon can be attributed to the presence of certain chemical elements, such as nitrogen (N2) and hydrogen (H2), which are highly reactive with air and can undergo reactions that produce light. The term "semispontaneity" refers to the fact that these substances emit a blue light when they react chemically with oxygen or other gases in an